CN221870164U - Balanced feeding mechanism - Google Patents

Abstract

The utility model relates to a balanced feeding mechanism which comprises an air cylinder and a feeding connecting rod, wherein piston rods are arranged on two sides of the air cylinder, the piston rods are connected with a clamping upper seat through hinges, a clamping lower seat connected with the hinges is arranged below the clamping upper seat, a material pulling shaft is arranged on the clamping upper seat and the clamping lower seat, a material pulling gear and a material pulling wheel are respectively arranged at two ends of the material pulling shaft, a material pulling main shaft is arranged at the lower end of the clamping lower seat, a material pulling driving gear, a ratchet wheel and a pawl seat are arranged at one end of the material pulling main shaft from inside to outside, the material pulling driving gear and the ratchet wheel synchronously move, the material pulling driving gear is meshed with the material pulling gear in an adapting mode, a rotating shaft is arranged at the top end of the pawl seat, a pawl matched with the ratchet wheel is arranged at one end of the rotating shaft, and the feeding connecting rod is connected with the lower end of the pawl seat in a hinging mode. The cylinder moves to enable the clamping upper seat to rotate, so that the material pulling wheel clamps the blank, the feeding connecting rod moves to enable the ratchet wheel to drive the material pulling driving gear to move, and the material pulling gear drives the material pulling wheel to conduct feeding movement.

Description

Balanced feeding mechanism

Technical Field

The utility model relates to the field of cold heading machines, in particular to the field of balanced feeding of cold heading machines.

Background

The cold header is special mechanical equipment mainly used for piers and specially used for mass production of nuts, bolts and other fasteners.

The utility model discloses a feed arrangement of eight station cold heading machines, including feeding case and feeding connecting rod, be equipped with feeding drive mechanism in the feeding case, the one end of feeding connecting rod is connected with ratchet rocker mechanism, and feeding drive mechanism is connected to ratchet rocker mechanism, the other end of feeding connecting rod is connected with height adjustment mechanism, and height adjustment mechanism is connected with feeding rocker mechanism, and feeding rocker mechanism is connected with spring return mechanism. The feeding length is adjusted by adjusting the height adjusting seat mechanism on the feeding rocker and adjusting the positions of the feeding connecting rod and the ratchet rocker, so that the whole feeding work can be performed quickly, accurately, stably and orderly.

In the prior art, the problems that the stability of a feeding mechanism is insufficient and the blank is easy to rub against a cold header machine body during feeding, so that the blank and the machine body are worn are solved.

Disclosure of Invention

In order to solve the problems, the utility model provides a balanced feeding mechanism which ensures that blanks can stably run in the feeding process.

In order to achieve the above purpose, the balance feeding mechanism comprises an air cylinder and a feeding connecting rod, wherein piston rods are arranged on two sides of the air cylinder, the piston rods are connected with a clamping upper seat through hinges, a clamping lower seat connected with the hinges is arranged below the clamping upper seat, feeding connecting rods are connected with the clamping lower seat through hinges, a material pulling shaft is arranged on the clamping upper seat and the clamping lower seat, a material pulling gear and a material pulling wheel are respectively arranged at two ends of the material pulling shaft, a material pulling main shaft is arranged at the lower end of the clamping lower seat, a material pulling driving gear, a ratchet wheel and a pawl seat are arranged at one end of the material pulling main shaft from inside to outside, the material pulling driving gear and the ratchet wheel synchronously move, the material pulling driving gear is meshed with the material pulling gear in an adapting mode, a rotating shaft is arranged at the top end of the pawl seat, a pawl matched with the ratchet wheel is arranged at one end of the pawl seat, and the feeding connecting rod is connected with the hinge of the lower end of the pawl seat, and the air cylinder stretches out to move the clamping upper seat to enable the two sides to rotate, so that the material pulling wheels on the clamping upper seat and the clamping lower seat are close to each other, a blank is clamped, a material pulling main shaft is arranged at one end, the lower seat is driven by the ratchet wheel to move, and a ratchet wheel to pull the blank.

Preferably, a mounting ring is arranged on the inner side of the upper clamping seat, an adaptive mounting seat is arranged at the top of the lower clamping seat, the mounting ring is connected to the mounting seat through a pin shaft hinge, and a gap exists between the upper clamping seat and the lower clamping seat. The mounting ring and the mounting seat are protruding parts, so that the upper clamping seat and the lower clamping seat can be connected in a hinged manner, and the gap provides a movement space for the upper clamping seat.

Preferably, the rear end of the feeding connecting rod props against the dovetail sliding block, the bottom of the dovetail sliding block is trapezoid, an adjusting screw is arranged at the bottom of the dovetail sliding block, the dovetail sliding block is clamped in the feeding adjusting plate, a trapezoid dovetail groove matched with the base of the dovetail sliding block is formed in the feeding adjusting plate, a fixing block is arranged on one side of the dovetail groove, the feeding adjusting plate is fixed on the driving gear through a bolt, and a plurality of fixing holes are formed in the driving gear at equal intervals. The bottom of the dovetail slide block and the dovetail groove are trapezoidal, so that the position deviation condition in the direction of the vertical adjusting plate does not occur under the working state, and the dovetail slide block is always positioned in the dovetail groove by the fixing block. The adjusting screw can control the position of the dovetail sliding block, and the feeding adjusting plate can be fixedly arranged on different fixing holes, so that the feeding mechanism has various feeding processes.

Preferably, the pawl consists of a pawl main body and a pawl fixing block, the pawl fixing block is provided with a rotary hole matched with the rotary shaft, the rotary hole is provided with a clamping groove communicated with the side wall of the pawl fixing block, and the surface of the pawl fixing block is provided with a clamping hole of a vertical clamping groove. The pawl is convenient for change when making the pawl main part impaired by pawl main part and pawl fixed block constitution, and accessible screw sets up the bolt in the clamp hole, makes the clamp groove shrink constantly, makes swivel axis and pawl fixed block zonulae occludens.

Preferably, a first limit groove is formed on one side, close to the feeding side, of the pulling main shaft, a second limit groove matched with the first limit groove is formed in the clamping lower seat, limit flat keys are arranged in the first limit groove and the second limit groove, and a feeding main shaft gland is arranged on the outer side of the limit flat keys. The cooperation of the limit flat key, the first limit groove and the second limit groove ensures that the feeding main shaft does not rotate in the working process, thereby influencing the rotation of the material pulling driving gear and the ratchet wheel which are arranged on the feeding main shaft.

Preferably, a brake ring limiting groove is formed in the side wall, close to the feeding connecting rod, of the pulling main shaft, a brake ring limiting key is arranged in the brake ring limiting groove, a brake ring which is sleeved on the pulling main shaft and is matched with the brake ring limiting key is arranged on the outer side of the pawl seat, and a pawl control block which is matched with the brake ring is arranged on the rotary shaft. The limiting groove and the limiting key enable the brake ring not to rotate in the working process, the brake ring and the pawl control block are placed according to the preset position to control the rotation angle of the ratchet wheel, and therefore the rotation angle of the gear set is adjusted, and the blank feeding process is controllable.

Preferably, a blank fixing seat is arranged on one side, far away from the feeding side, of the clamping lower seat. Because the gap between the feeding wheels is smaller, the blank fixing seat can enable the blank to smoothly enter the feeding position, and plays a limiting role in the movement process of the blank.

Preferably, a positioning block is arranged at the position where the clamping lower seat is matched with the pulling gear, a one-way bearing connected with a bolt is arranged on the positioning block, the one-way bearing consists of an inner ring and an outer ring, and the inner ring is sleeved on the pulling shaft. The positioning block is convenient for positioning and mounting the pulling gear. The unidirectional bearing can effectively control the rotation direction of the pulling shaft, and the blank is prevented from being pulled to generate reverse displacement when the pawl returns.

According to the balance feeding mechanism designed by the utility model, the blank is clamped by the upper feeding wheel and the lower feeding wheel during feeding, so that the blank and a machine body are not abraded due to shaking during working, a dovetail sliding block is adopted in a driving part, and a plurality of feeding adjusting plates are arranged on a driving gear, so that the feeding process can be adjusted according to actual condition requirements, and the feeding requirements of different blanks are met.

Drawings

FIG. 1 is a schematic diagram of a balanced feed mechanism of the present utility model;

FIG. 2 is a schematic view of the rear side structure of the balanced feed mechanism of the present utility model;

FIG. 3 is a schematic diagram of the driving part of the balanced feed mechanism of the present utility model;

FIG. 4 is a schematic diagram of the driving part of the balanced feed mechanism of the present utility model;

FIG. 5 is a schematic view of the pawl construction of the present utility model;

FIG. 6 is a schematic diagram of the structure of the pulling main shaft of the utility model;

FIG. 7 is a partial cross-sectional view of a balanced feed mechanism of the present utility model.

Wherein: the device comprises a cylinder 1, a feeding connecting rod 2, a piston rod 3, a clamping upper seat 4, a mounting ring 41, a clamping lower seat 5, a mounting seat 51, a second positioning groove 52, a blank fixing seat 6, a material pulling shaft 7, a material pulling gear 8, a material pulling wheel 9, a positioning block 10, a material pulling main shaft 11, a first limiting groove 111, a feeding main shaft gland 112, a brake ring limiting groove 113, a material pulling driving gear 12, a ratchet 13, a pawl seat 14, a rotary shaft 15, a pawl 16, a pawl main body 161, a pawl fixing block 162, a rotary hole 163, a clamping groove 164, a clamping hole 165, a dovetail sliding block 17, a fixing block 171, a feeding adjusting plate 18, a dovetail groove 181, an adjusting screw 19, a driving gear 20, a fixing hole 201, a one-way bearing 21, an inner ring 211, an outer ring 212, a brake ring 22, a pawl control block 23, a limiting flat key 24 and a brake ring limiting key 25.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Example 1

As shown in fig. 1, a balanced feeding mechanism described in this embodiment includes a cylinder 1 and a feeding connecting rod 2, piston rods 3 are disposed on two sides of the cylinder 1, the piston rods 3 are all connected with a clamping upper seat 4 through hinges, a clamping lower seat 5 connected with hinges is disposed below the clamping upper seat 4, a feeding shaft 7 is disposed on the clamping upper seat 4 and the clamping lower seat 5, a feeding gear 8 and a feeding wheel 9 are disposed on two ends of the feeding shaft 7 respectively, a feeding main shaft 11 is disposed at the lower end of the clamping lower seat 5, a feeding driving gear 12, a ratchet wheel 13 and a pawl seat 14 are disposed at one end of the feeding main shaft 11 from inside to outside, the feeding driving gear 12 and the ratchet wheel 13 move synchronously, the feeding driving gear 12 and the ratchet wheel 13 are engaged with each other in an adapting mode, a rotating shaft 15 is disposed at the top end of the pawl seat 14, a feeding connecting rod 2 is disposed at the hinge connection of the lower end of the pawl seat 14, the cylinder 1 stretches out of the two sides to enable the clamping upper seat 4 to rotate, and the ratchet wheel 9 is driven by the ratchet wheel 9 to move close to the feeding driving gear 12, and the feeding gear 9 is driven by the ratchet wheel 9 to move, and the feeding main shaft 12 is driven by the ratchet wheel 9 to move.

Example 2

In the balanced feeding mechanism described in this embodiment, as shown in fig. 3, a mounting ring 41 is disposed on the inner side of the upper clamping seat 4, an adaptive mounting seat 51 is disposed on the top of the lower clamping seat 5, the mounting ring 41 is hinged to the mounting seat 51 through a pin, and a gap exists between the upper clamping seat 4 and the lower clamping seat 5. The mounting ring 41 and the mounting seat 51 are protruding parts, so that the upper clamping seat 4 and the lower clamping seat 5 can be connected in a hinged manner, and the gap provides a movement space for the upper clamping seat 4; as shown in fig. 2, the clamping lower seat 5 is far away from the blank fixing seat 6 at the feeding side. Because the gaps between the feeding wheels 9 are smaller, the blank fixing seat 6 can enable blanks to smoothly enter the feeding position, and plays a limiting role in the movement process of the blanks; as shown in fig. 1 and 2, the positioning block 10 is disposed at the position where the clamping lower seat 5 and the pulling gear 8 are adapted, a one-way bearing 21 connected by a bolt is disposed on the positioning block 10, the one-way bearing 21 is composed of an inner ring 211 and an outer ring 212, and the inner ring 211 is sleeved on the pulling shaft 7. The positioning block 10 is convenient for positioning and mounting the pulling gear 8. The unidirectional bearing 21 can effectively control the rotation direction of the pulling shaft 7, and the blank is prevented from being pulled to generate reverse displacement when the pawl 13 returns.

Example 3

According to the balanced feeding mechanism described in the embodiment, as shown in fig. 4, the rear end of the feeding connecting rod 2 props against the dovetail sliding block 17, the bottom of the dovetail sliding block 17 is trapezoid, an adjusting screw 19 is arranged at the bottom of the dovetail sliding block 17, the dovetail sliding block 17 is clamped in the feeding adjusting plate 18, a trapezoid dovetail groove 181 matched with the base of the dovetail sliding block 17 is arranged in the feeding adjusting plate 18, a fixing block 171 is arranged on one side of the dovetail groove 181, the feeding adjusting plate 18 is fixed on the driving gear 20 through bolts, and a plurality of fixing holes 201 are formed in the driving gear 20 at equal intervals. The bottom of the dovetail slide block 17 and the dovetail groove 181 are trapezoidal, so that the position deviation condition in the direction perpendicular to the feeding adjusting plate 18 does not occur in the working state, and the fixed block 171 enables the dovetail slide block 17 to be always positioned in the dovetail groove 181. The adjusting screw 19 can control the position of the dovetail sliding block 17, so that the dovetail sliding block 17 drives the feeding connecting rod 2 at different positions, and the feeding adjusting plate 18 can be fixedly arranged on different fixing holes 201, so that the feeding mechanism has various feeding processes.

Example 4

In the balance feeding mechanism described in this embodiment, as shown in fig. 5, the pawl 16 is composed of a pawl main body 161 and a pawl fixing block 162, the pawl fixing block 162 is provided with a rotation hole 163 adapted to the rotation shaft 15, the rotation hole 163 is provided with a clamping groove 164 communicated with a side wall of the pawl fixing block 162, and a clamping hole 165 perpendicular to the clamping groove 164 is provided on the surface of the pawl fixing block 162. The pawl 16 is composed of a pawl main body 161 and a pawl fixing block 162, so that the pawl main body 161 is convenient to replace when damaged, and the clamping groove 164 is continuously contracted by screwing a bolt arranged in the clamping hole 165, so that the rotary shaft 15 and the pawl fixing block 162 are tightly connected; the material pulling main shaft 11 is provided with a first limit groove 111 near the feeding side, the clamping lower seat 5 is provided with a second limit groove 52 matched with the first limit groove 111, limit flat keys 24 are arranged in the first limit groove 111 and the second limit groove 52, and a feeding main shaft gland 112 is arranged outside the limit flat keys 24. The cooperation of the limit flat key 24 with the first limit groove 111 and the second limit groove 52 prevents the feeding main shaft 11 from rotating in the working process, thereby influencing the rotation of the pulling driving gear 12 and the ratchet wheel 13 arranged on the feeding main shaft 11; as shown in fig. 3, a brake ring limit groove 113 is formed in the side wall, close to the feeding connecting rod 2, of the pulling main shaft 11, a brake ring limit key 25 is arranged in the brake ring limit groove 113, a brake ring 22 which is sleeved on the pulling main shaft 11 and is matched with the brake ring limit key 25 is arranged on the outer side of the pawl seat 14, and a pawl control block 23 which is matched with the brake ring 22 is arranged on the rotating shaft 15. The feeding connecting rod 2 drives the pawl seat 14 to rotate, the pawl 16 can push the ratchet 13 to rotate, so that a subsequent gear set is driven to rotate, feeding movement is completed, when a pawl control block 23 on the pawl seat 14 is contacted with a brake ring 22, the brake ring 22 limits the rotation of the pawl control block 23, then the pawl seat 14 and the subsequent rotation driven by the pawl control block are limited, and the position of the brake ring 22 is set, so that the rotation angle of the gear set can be controlled, and blank feeding is controllable.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. The balance feeding mechanism comprises a cylinder (1) and a feeding connecting rod (2), and is characterized in that piston rods (3) are arranged on two sides of the cylinder (1), a clamping upper seat (4) is connected to the piston rods (3) through hinges, a clamping lower seat (5) is arranged below the clamping upper seat (4) and connected to the hinges, a material pulling shaft (7) is arranged on the clamping upper seat (4) and the clamping lower seat (5), a material pulling gear (8) and a material pulling wheel (9) are respectively arranged at two ends of the material pulling shaft (7), a material pulling main shaft (11) is arranged at the lower end of the clamping lower seat (5), a material pulling driving gear (12), a ratchet wheel (13) and a pawl seat (14) are arranged at one end of the material pulling main shaft (11) from inside to outside, the material pulling driving gear (12) and the ratchet wheel (13) synchronously move, the material pulling driving gear (12) is meshed with the material pulling gear (8) in an adapting mode, a shaft (15) is arranged at the top end of the pawl seat (14), a pawl (15) is arranged at one end of the pawl seat (15) and is connected with the ratchet wheel (14) in an adapting mode, the ratchet wheel (14) and the ratchet wheel (14) is connected to the two sides of the cylinder (1) in a hinged mode, and the material pulling main shaft (1) moves towards the two sides, thereby make clamp material upper seat (4) and clamp draw material wheel (9) on material lower seat (5) and be close to each other thereby press from both sides tight blank, feeding connecting rod (2) motion makes pawl seat (14) drive pawl (16) stir ratchet (13) thereby make ratchet (13) drive draw material driving gear (12) motion, and then realize drawing material gear (8) to drive and draw material wheel (9) and make the blank carry out feeding motion.

2. The balanced feeding mechanism according to claim 1, wherein a mounting ring (41) is arranged on the inner side of the upper clamping seat (4), an adaptive mounting seat (51) is arranged on the top of the lower clamping seat (5), the mounting ring (41) is hinged to the mounting seat (51) through a pin shaft, and a gap exists between the upper clamping seat (4) and the lower clamping seat (5).

3. The balanced feeding mechanism according to claim 1, wherein the rear end of the feeding connecting rod (2) is provided with a dovetail sliding block (17), the bottom of the dovetail sliding block (17) is trapezoid, the bottom of the dovetail sliding block (17) is provided with an adjusting screw (19), the dovetail sliding block (17) is clamped in a feeding adjusting plate (18), a trapezoid dovetail groove (181) matched with the base of the dovetail sliding block (17) is formed in the feeding adjusting plate (18), one side of the dovetail groove (181) is provided with a fixing block (171), the feeding adjusting plate (18) is fixed on a driving gear (20) through bolts, and a plurality of fixing holes (201) are formed in the driving gear (20) at equal intervals.

4. The balance feeding mechanism according to claim 1, wherein the pawl (16) is composed of a pawl main body (161) and a pawl fixing block (162), a rotation hole (163) matched with the rotation shaft (15) is formed in the pawl fixing block (162), a clamping groove (164) communicated with the side wall of the pawl fixing block (162) is formed in the rotation hole (163), and a clamping hole (165) perpendicular to the clamping groove (164) is formed in the surface of the pawl fixing block (162).

5. The balanced feeding mechanism according to claim 1, wherein a first limit groove (111) is formed on one side, close to the feeding, of the pulling main shaft (11), a second limit groove (52) matched with the first limit groove (111) is formed on the clamping lower seat (5), limit flat keys (24) are formed in the first limit groove (111) and the second limit groove (52), and a feeding main shaft gland (112) is arranged on the outer side of the limit flat keys (24).

6. The balance feeding mechanism according to claim 1, wherein a brake ring limiting groove (113) is formed in the side wall, close to the feeding connecting rod (2), of the pulling main shaft (11), a brake ring limiting key (25) is arranged in the brake ring limiting groove (113), a brake ring (22) sleeved on the pulling main shaft (11) and matched with the brake ring limiting key (25) is arranged on the outer side of the pawl seat (14), and a pawl control block (23) matched with the brake ring (22) is arranged on the rotary shaft (15).

7. A balanced feeding mechanism according to claim 1, wherein the clamping lower seat (5) is provided with a blank holder (6) at the side remote from the feeding.

8. The balance feeding mechanism according to claim 1, wherein a positioning block (10) is arranged at the position where the clamping lower seat (5) is matched with the pulling gear (8), a one-way bearing (21) connected with a bolt is arranged on the positioning block (10), the one-way bearing (21) consists of an inner ring (211) and an outer ring (212), and the inner ring (211) is sleeved on the pulling shaft (7).